# Power Supply Unit MEAN WELL WDR-120-12 120W AC Input 180-550V

**URL:** https://aio.lv/en/product--mean-well-wdr-120-12--1620806
**Data updated:** 2026-01-17 09:44 (EET)
**Category:** Other goods
**Manufacturer:** mean well
**Manufacturer code:** WDR-120-12
**EAN:** 4021087017787
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 76.13 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 62.92 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--mean-well-wdr-120-12--1620806

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | Thursday | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The MEAN WELL WDR-120-12 is a 120W power supply unit designed for industrial applications. It features a wide AC input voltage range of 180-550V and a passive cooling system. With a mean time between failures (MTBF) of 268,000 hours, it ensures reliability and longevity. The compact dimensions make it suitable for various installations.

## Long description

The MEAN WELL WDR-120-12 is a 120W industrial power supply with a wide AC input range of 180–550V. It provides reliable DC output with passive cooling by free air convection and is designed for installation on standard DIN rail TS-35/7.5 or 15. The unit undergoes a 100% full load burn-in test and includes a built-in DC OK relay for status monitoring.
Advantages
Wide AC input range supports installations with variable mains voltages. Passive cooling eliminates the need for fans, reducing maintenance and noise. Built-in constant current limiting protects connected loads from overcurrent conditions. Compact DIN-rail form factor simplifies mounting in control cabinets and industrial enclosures. High MTBF indicates long operational life under normal conditions.
Suitable for
Industrial control cabinets and automation systems
Telecommunications and network equipment in harsh mains conditions
Powering sensors, PLCs and field devices requiring 12V DC
OEM equipment and machine control panels
Key specifications
Rated output power: 120 W
Nominal output voltage: 12 V DC
Input voltage range: 180–550 V AC
Cooling method: convection (fanless)
Protection: built-in constant current limiting
Monitoring: DC OK relay included
Mounting: DIN rail TS-35/7.5 or 15
Quality test: 100% full load burn-in
Dimensions: compact DIN-rail enclosure (manufacturer specification)
How to use
Mount the unit on a TS-35/7.5 or TS-35/15 DIN rail inside a suitably ventilated enclosure. Connect the AC supply within the specified 180–550 V AC range to the input terminals and verify polarity on the DC output before connecting loads. Use the DC OK relay output for remote monitoring of the power status. Ensure wiring and fusing comply with local electrical codes and the load does not exceed the rated 120 W.
Usage recommendations
Install the power supply in an environment with adequate airflow to maintain passive cooling efficiency, avoid mounting directly above heat-producing devices, and follow manufacturer guidelines for wiring and protective fusing to ensure safe and reliable operation.

## Specifications

| Feature | Value |
|---|---|
| Mean time between failures (MTBF) | 268000 h |
| Safety | Ul508 approved, IEC60950-1 CB approved by SIQ, design refer to GL;(meet EN60204-1) |
| Operating relative humidity (H-H) | 20 - 95 |
| Storage temperature (T-T) | -40 - 85 |
| Operating temperature (T-T) | -25 - 70 |
| Storage relative humidity (H-H) | 10 - 95 |
| Height | 125.2 mm |
| Width | 40 mm |
| Depth | 113.5 mm |
| Product colour | Metallic |
| Input current | 0.7 - 1.2 |
| Efficiency | 89.5 % |
| Hold time | 50 ms |
| Rise time | 70 ms |
| Cooling type | Passive |
| Power protection features | Overload, Short circuit, Overheating, Over voltage |
| Voltage tolerance | 1.5 % |
| AC input frequency | 47 - 63 |
| AC input voltage | 180 - 550 |
| Total power | 120 W |

## FAQ

### How much does the Power Supply Unit MEAN WELL WDR-120-12 cost, and is it available for purchase?

The price is 76.13 € (valid at the time of publication and already includes all taxes). The item is available for order — 122 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Thursday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

### Can Power Supply Unit MEAN WELL WDR-120-12 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All mean well products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized mean well service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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